INTRODUCTION. 



12. Mastodon pandionis, Falconer. 



Western India. Pliocene (and? Up. Miocene). 



13. Mastodon pentelici, G-audry and Lartet. 



Europe (Greece and Hungary) and Persia. Low. Pliocene. 



14. Mastodon falconeri, Lydekker. 



Western India. Pliocene. 

 *15. Mastodon euhypodon, Cope l . 



North America (Kansas). Pliocene (Loup Fork). 

 16. Mastodon humboldti, Cuvier. 



South America. Pleistocene. 

 - 17. Mastodon tropicus (Cope 2 ). 



North America (Mexico). Pliocene (Loup Fork). 



18. Mastodon shepardi, Cope 3 {ex Leidy). 



North America (California and Mexico). Pliocene (Loup Fork). 



19. Mastodon cordillerum, Cuvier. 



South America. Pleistocene. 



20. Mastodon sivalensis, Cautley. 



India. Pliocene. 



21. Mastodon arvernensis, Croizet and Jobert. 



Europe. Up. and Low. Pliocene. 



22. Mastodon miripicus, Leidy 4 . 



North America. Pliocene (Loup Fork). 

 *23. Mastodon campester (Cope 5 ). 



North America. Pliocene (Loup Fork). 



24. Mastodon perimensis, Falconer and Cautley. 



Western India. Pliocene. 



25. Mastodon punjabiensis, Lydekker. 



North-western India. Pliocene. 



26. Mastodon longirostris, Kaup. 



Europe. Low. Pliocene. 



27. Mastodon atticus, Wagner. 



Greece. Low. Pliocene. 



28. Mastodon catjtleyi, Lydekker. 



Western India. Pliocene. 



29. Mastodon latidens, Clift. 



India, Burma, and Borneo. Pliocene. - 



1 Amer. Nat. vol. xviii. p. 525 (1884). A small species, with molars like 

 those of M. angustidens, but with a short mandibular symphysis. 



2 Proc. Amer. Phil. Soc. vol. xxii. p. 7 (1885; read im)—Dibehdon. Of 

 large size, with a short, edentulous mandibular symphysis ; the molars resemble 

 those of M. cordillerum. 



3 Loc. cit. Closely allied to the preceding, but of smaller size. 



4 Proc. Ac. Nat. Sci. Philad. for 1858, p. 10 (1859). 



5 Proc. Amer. Phil. Soc. vol. xvii. p. 225 (1878; read 1877) — Tetralophodon. 

 The mandibular symphysis is elongated, and furnished with incisors ; the 

 columns of the ridges of the molars are arranged somewhat alternately, and 

 there are no accessory tubercles in the valleys. 



